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CC_BFP_High 6225 102.6 dBA 960 480 -49804 -3718131 137CC_AUX_XFMR 6225 92.6 dBA 960 480 -49807 -3718128 136CC_GSUT 6225 97.6 dBA 960 480 -49809 -3718126 138CC_St_SO_UHN 6225 104.9 dBA 960 480 -49820 -3718130 182CC_St_OD_UHN 6225 78.2 dBA 960 480 -49819 -3718131 162CC_BFP_Low 6226 102.6 dBA 960 480 -49829 -3718162 136CC_BFP_High 6226 102.6 dBA 960 480 -49831 -3718160 136CC_AUX_XFMR 6226 92.6 dBA 960 480 -49834 -3718157 135CC_GSUT 6226 97.6 dBA 960 480 -49836 -3718156 137CC_St_SO_UHN 6226 104.9 dBA 960 480 -49847 -3718160 182CC_St_OD_UHN 6226 78.2 dBA 960 480 -49846 -3718160 162CC_BFP_Low 6227 102.6 dBA 960 480 -49856 -3718191 136CC_BFP_High 6227 102.6 dBA 960 480 -49859 -3718189 136CC_AUX_XFMR 6227 92.6 dBA 960 480 -49861 -3718187 135CC_GSUT 6227 97.6 dBA 960 480 -49863 -3718185 137CC_St_SO_UHN 6227 104.9 dBA 960 480 -49874 -3718189 182CC_St_OD_UHN 6227 78.2 dBA 960 480 -49874 -3718189 162CC_BFP_Low 6228 102.6 dBA 960 480 -49883 -3718221 135CC_BFP_High 6228 102.6 dBA 960 480 -49886 -3718218 135CC_AUX_XFMR 6228 92.6 dBA 960 480 -49889 -3718216 134CC_GSUT 6228 97.6 dBA 960 480 -49891 -3718214 136CC_St_SO_UHN 6228 104.9 dBA 960 480 -49901 -3718218 181CC_St_OD_UHN 6228 78.2 dBA 960 480 -49901 -3718218 161CC_BFP_Low 6229 102.6 dBA 960 480 -50219 -3718581 129CC_BFP_High 6229 102.6 dBA 960 480 -50222 -3718579 129CC_AUX_XFMR 6229 92.6 dBA 960 480 -50224 -3718576 128CC_GSUT 6229 97.6 dBA 960 480 -50226 -3718574 130CC_St_SO_UHN 6229 104.9 dBA 960 480 -50237 -3718578 175

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CC_St_OD_UHN 6229 78.2 dBA 960 480 -50237 -3718579 155CCCW Coolers 72 112.7 dBA 960 480 -50171 -3718393 133CCCW Coolers 72 112.7 dBA 960 480 -50292 -3718520 129Air Cooled Condenser 72 112.7 dBA 960 480 -50229 -3718495 130Air Cooled Condenser 72 112.7 dBA 960 480 -50193 -3718457 130CCCW Coolers 73 112.7 dBA 960 480 -49840 -3718039 138CCCW Coolers 73 112.7 dBA 960 480 -49975 -3718186 136Air Cooled Condenser 73 112.7 dBA 960 480 -49914 -3718158 136Air Cooled Condenser 73 112.7 dBA 960 480 -49873 -3718113 137CCCW Coolers TEST 7a2_test 97.6 dBA 960 480 -50653 -3718409 126Ac_Trf1 8 100.3 dBA 960 480 -49559 -3718446 135Ac_Trf2 8 100.3 dBA 960 480 -49544 -3718431 136Ac_Trf3 8 100.3 dBA 960 480 -49529 -3718416 136Ac_Trf4 8 100.3 dBA 960 480 -49514 -3718402 136Ac_Trf1 9 100.3 dBA 960 480 -49394 -3718023 141Ac_Trf2 9 100.3 dBA 960 480 -49381 -3718009 142Ac_Trf3 9 100.3 dBA 960 480 -49367 -3717993 142Ac_Trf4 9 100.3 dBA 960 480 -49354 -3717978 14211_St_OD_UHN s11 78.2 dBA 960 480 -50092 -3718489 15211_St_SL_UHN s11 97.6 dBA 960 480 -50092 -3718490 14211_St_SO_UHN s11 104.9 dBA 960 480 -50093 -3718489 15611_St_SL_UHN s12 97.6 dBA 960 480 -50119 -3718519 14111_St_OD_UHN s12 78.2 dBA 960 480 -50119 -3718518 15111_St_SO_UHN s12 104.9 dBA 960 480 -50120 -3718518 15511_St_SL_UHN s21 97.6 dBA 960 480 -50176 -3718581 14111_St_OD_UHN s21 78.2 dBA 960 480 -50177 -3718580 15111_St_SO_UHN s21 104.9 dBA 960 480 -50177 -3718580 15511_St_SL_UHN s22 97.6 dBA 960 480 -50203 -3718610 141

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11_St_OD_UHN s22 78.2 dBA 960 480 -50204 -3718609 15111_St_SO_UHN s22 104.9 dBA 960 480 -50204 -3718609 15511_St_SL_UHN s31 97.6 dBA 960 480 -49758 -3718132 14911_St_OD_UHN s31 78.2 dBA 960 480 -49759 -3718132 15911_St_SO_UHN s31 104.9 dBA 960 480 -49759 -3718131 16311_St_SL_UHN s32 97.6 dBA 960 480 -49785 -3718162 14911_St_OD_UHN s32 78.2 dBA 960 480 -49786 -3718161 15911_St_SO_UHN s32 104.9 dBA 960 480 -49786 -3718160 16311_St_SL_UHN s41 97.6 dBA 960 480 -49812 -3718190 14811_St_OD_UHN s41 78.2 dBA 960 480 -49813 -3718189 15811_St_SO_UHN s41 104.9 dBA 960 480 -49813 -3718189 16211_St_SL_UHN s42 97.6 dBA 960 480 -49840 -3718220 14811_St_OD_UHN s42 78.2 dBA 960 480 -49840 -3718219 15811_St_SO_UHN s42 104.9 dBA 960 480 -49841 -3718219 16211_St_SL_UHN s43 97.6 dBA 960 480 -49867 -3718249 14711_St_OD_UHN s43 78.2 dBA 960 480 -49868 -3718248 15711_St_SO_UHN s43 104.9 dBA 960 480 -49868 -3718247 161 Description Source ID Sound

Power Unit Daytime

Operation Night-time Operation

Coordinates

(min) (min) (X) (Y) (Z)

11_GT_Roof 11 97.9 dBA 960 480 n/a n/a 10.5 11_GT_Roof 12 97.9 dBA 960 480 n/a n/a 10.5 11_GT_Roof 21 97.9 dBA 960 480 n/a n/a 10.5 11_GT_Roof 22 97.9 dBA 960 480 n/a n/a 10.5

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11_GT_Roof 31 97.9 dBA 960 480 n/a n/a 10.5 11_GT_Roof 32 97.9 dBA 960 480 n/a n/a 10.5 11_GT_Roof 41 97.9 dBA 960 480 n/a n/a 10.5 11_GT_Roof 42 97.9 dBA 960 480 n/a n/a 10.5 11_GT_Roof 43 97.9 dBA 960 480 n/a n/a 10.5

Description Source ID Sound

Power Unit Daytime

Operation Night-time Operation

Coordinates

(min) (min) (X) (Y) (Z) 11UMB-E Gas Turbine Building East Wall 11 88 dBA 960

480 n/a n/a n/a

11UMB-N Gas Turbine Building North Wall 11 93 dBA 960

480 n/a n/a n/a

11UMB-S Gas Turbine Building South Wall 11 115 dBA 960

480 n/a n/a n/a

11UMB-W Gas Turbine Building West Wall 11 120 dBA 960

480 n/a n/a n/a

11UMB-S Gas Turbine Building South Wall 12 115 dBA 960

480 n/a n/a n/a

11UMB-W Gas Turbine Building West Wall 12 120 dBA 960

480 n/a n/a n/a

11UMB-N Gas Turbine Building North Wall 12 93 dBA 960

480 n/a n/a n/a

11UMB-E Gas Turbine Building East Wall 12 88 dBA 960

480 n/a n/a n/a

11UMB-S Gas Turbine Building South Wall 21 115 dBA 960

480 n/a n/a n/a

11UMB-W Gas Turbine Building West Wall 21 120 dBA 960

480 n/a n/a n/a

11UMB-N Gas Turbine Building 21 93 dBA 960 480 n/a n/a n/a

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North Wall 11UMB-E Gas Turbine Building East Wall 21 88 dBA 960

480 n/a n/a n/a

11UMB-S Gas Turbine Building South Wall 22 115 dBA 960

480 n/a n/a n/a

11UMB-W Gas Turbine Building West Wall 22 120 dBA 960

480 n/a n/a n/a

11UMB-N Gas Turbine Building North Wall 22 93 dBA 960

480 n/a n/a n/a

11UMB-E Gas Turbine Building East Wall 22 88 dBA 960

480 n/a n/a n/a

11UMB-S Gas Turbine Building South Wall 31 115 dBA 960

480 n/a n/a n/a

11UMB-W Gas Turbine Building West Wall 31 120 dBA 960

480 n/a n/a n/a

11UMB-N Gas Turbine Building North Wall 31 93 dBA 960

480 n/a n/a n/a

11UMB-E Gas Turbine Building East Wall 31 88 dBA 960

480 n/a n/a n/a

11UMB-S Gas Turbine Building South Wall 32 115 dBA 960

480 n/a n/a n/a

11UMB-W Gas Turbine Building West Wall 32 120 dBA 960

480 n/a n/a n/a

11UMB-N Gas Turbine Building North Wall 32 93 dBA 960

480 n/a n/a n/a

11UMB-E Gas Turbine Building East Wall 32 88 dBA 960

480 n/a n/a n/a

11UMB-S Gas Turbine Building South Wall 41 115 dBA 960

480 n/a n/a n/a

11UMB-W Gas Turbine Building West Wall 41 120 dBA 960

480 n/a n/a n/a

11UMB-N Gas Turbine Building North Wall 41 93 dBA 960

480 n/a n/a n/a

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11UMB-E Gas Turbine Building East Wall 41 88 dBA 960

480 n/a n/a n/a

11UMB-S Gas Turbine Building South Wall 42 115 dBA 960

480 n/a n/a n/a

11UMB-W Gas Turbine Building West Wall 42 120 dBA 960

480 n/a n/a n/a

11UMB-N Gas Turbine Building North Wall 42 93 dBA 960

480 n/a n/a n/a

11UMB-E Gas Turbine Building East Wall 42 88 dBA 960

480 n/a n/a n/a

11UMB-S Gas Turbine Building South Wall 43 115 dBA 960

480 n/a n/a n/a

11UMB-W Gas Turbine Building West Wall 43 120 dBA 960

480 n/a n/a n/a

11UMB-N Gas Turbine Building North Wall 43 93 dBA 960

480 n/a n/a n/a

11UMB-E Gas Turbine Building East Wall 43 88 dBA 960

480 n/a n/a n/a

CC_CTG_Pkg 6221 98 dBA 960 480 n/a n/a n/a CC_HRSG 6221 117 dBA 960 480 n/a n/a n/a CC_CTG_Pkg 6222 98 dBA 960 480 n/a n/a n/a CC_HRSG 6222 117 dBA 960 480 n/a n/a n/a CC_CTG_Pkg 6223 98 dBA 960 480 n/a n/a n/a CC_HRSG 6223 117 dBA 960 480 n/a n/a n/a CC_CTG_Pkg 6224 98 dBA 960 480 n/a n/a n/a CC_HRSG 6224 117 dBA 960 480 n/a n/a n/a CC_CTG_Pkg 6225 98 dBA 960 480 n/a n/a n/a CC_HRSG 6225 117 dBA 960 480 n/a n/a n/a CC_CTG_Pkg 6226 98 dBA 960 480 n/a n/a n/a CC_HRSG 6226 117 dBA 960 480 n/a n/a n/a CC_CTG_Pkg 6227 98 dBA 960 480 n/a n/a n/a

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CC_HRSG 6227 117 dBA 960 480 n/a n/a n/a CC_CTG_Pkg 6228 98 dBA 960 480 n/a n/a n/a CC_HRSG 6228 117 dBA 960 480 n/a n/a n/a CC_CTG_Pkg 6229 98 dBA 960 480 n/a n/a n/a CC_HRSG 6229 117 dBA 960 480 n/a n/a n/a CC_STG_Pkg 72 118 dBA 960 480 n/a n/a n/a CC_STG_Pkg 72 118 dBA 960 480 n/a n/a n/a CC_STG_Pkg 73 118 dBA 960 480 n/a n/a n/a CC_STG_Pkg 73 118 dBA 960 480 n/a n/a n/a Ac_Ex1_GT1 8 96 dBA 960 480 n/a n/a n/a Ac_Ex1_GT1 8 96 dBA 960 480 n/a n/a n/a Ac_En1_GT1 8 96 dBA 960 480 n/a n/a n/a Ac_En2_GT1 8 96 dBA 960 480 n/a n/a n/a Ac_En1_GT2 8 96 dBA 960 480 n/a n/a n/a Ac_En2_GT2 8 96 dBA 960 480 n/a n/a n/a Ac_En1_GT3 8 96 dBA 960 480 n/a n/a n/a Ac_En2_GT3 8 96 dBA 960 480 n/a n/a n/a Ac_En1_GT4 8 96 dBA 960 480 n/a n/a n/a Ac_En2_GT4 8 96 dBA 960 480 n/a n/a n/a Ac_Ex1_GT2 8 96 dBA 960 480 n/a n/a n/a Ac_Ex1_GT2 8 96 dBA 960 480 n/a n/a n/a Ac_Ex1_GT3 8 96 dBA 960 480 n/a n/a n/a Ac_Ex1_GT3 8 96 dBA 960 480 n/a n/a n/a Ac_Ex1_GT4 8 96 dBA 960 480 n/a n/a n/a Ac_Ex1_GT4 8 96 dBA 960 480 n/a n/a n/a Ac_Ex1_GT1 9 96 dBA 960 480 n/a n/a n/a Ac_Ex1_GT1 9 96 dBA 960 480 n/a n/a n/a Ac_En1_GT1 9 96 dBA 960 480 n/a n/a n/a

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Ac_En2_GT1 9 96 dBA 960 480 n/a n/a n/a Ac_En1_GT2 9 96 dBA 960 480 n/a n/a n/a Ac_En2_GT2 9 96 dBA 960 480 n/a n/a n/a Ac_En1_GT3 9 96 dBA 960 480 n/a n/a n/a Ac_En2_GT3 9 96 dBA 960 480 n/a n/a n/a Ac_En1_GT4 9 96 dBA 960 480 n/a n/a n/a Ac_En2_GT4 9 96 dBA 960 480 n/a n/a n/a Ac_Ex1_GT2 9 96 dBA 960 480 n/a n/a n/a Ac_Ex1_GT2 9 96 dBA 960 480 n/a n/a n/a Ac_Ex1_GT3 9 96 dBA 960 480 n/a n/a n/a Ac_Ex1_GT3 9 96 dBA 960 480 n/a n/a n/a Ac_Ex1_GT4 9 96 dBA 960 480 n/a n/a n/a Ac_Ex1_GT4 9 96 dBA 960 480 n/a n/a n/a

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APPENDIX C

Calculated Noise Levels at Discrete Receptors

Table C-1a. Calculated Noise Levels at Discrete Receptors

Scenarios OC CC CC-INT CC-SUB Day Night Day Night Day Night Day Night

Receptors (dBA) (dBA) (dBA) (dBA) (dBA) (dBA) (dBA) (dBA)MP1 51.9 52.3 56 56.4 53.3 53.7 51.8 52.2 MP2 41.8 42.4 42.7 43.2 42 42.5 41.8 42.3 MP3 59.3 59.6 67.9 68.2 62.9 63.1 59.3 59.6

R1 nw 60.8 61 73.4 73.5 66.8 66.9 60.7 60.9 R2 nw 61.6 61.9 74 74.1 67.4 67.5 61.4 61.6 R3 nw 56.5 56.9 62.7 63.1 59.1 59.4 56.4 56.7 R4 ne 52.8 53.3 57.5 58 54.6 55 52.6 53 R5 se 53.5 53.8 57.5 58 54.9 55.2 53.6 54 R6 se 56.6 56.9 61.4 61.8 58.1 58.4 56.5 56.8 R7 se 56.3 56.6 60.2 60.6 57.6 57.9 56.4 56.7 R8 sw 59.3 59.5 62.9 63.3 60.3 60.6 59.4 59.6 R9 sw 62.1 62.2 70.5 70.8 66 66.1 62.2 62.4

Scenarios OC+A CC+INT+A CC+SUB+A Acacia Day Night Day Night Day Night Day Night

Receptors (dBA) (dBA) (dBA) (dBA) (dBA) (dBA) (dBA) (dBA)MP1 54.5 55.0 55.3 55.8 54.5 54.9 51.1 51.6 MP2 42.0 42.6 42.2 42.7 42.0 42.5 28.2 28.7 MP3 59.4 59.7 62.9 63.1 59.4 59.7 40.1 40.6

R1 nw 60.8 61.0 66.8 66.9 60.7 60.9 39 39.6 R2 nw 61.7 62.0 67.4 67.5 61.5 61.7 43.5 44.1 R3 nw 57.2 57.6 59.5 59.8 57.1 57.5 49 49.5 R4 ne 55.3 55.8 56.4 56.9 55.2 55.7 51.8 52.3 R5 se 55.4 55.8 56.4 56.7 55.5 55.9 50.9 51.4 R6 se 57.0 57.3 58.4 58.7 56.9 57.2 46.2 46.7 R7 se 56.3 56.6 57.6 57.9 56.4 56.7 36.3 36.8 R8 sw 59.3 59.5 60.3 60.6 59.4 59.6 33.1 33.7 R9 sw 62.1 62.2 66.0 66.1 62.2 62.4 37.8 38.4

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APPENDIX D

Graphical Results from Noise Modelling

1. Existing Situation: Open Cycle Gas Turbine units (9 units, i.e. 4 existing and 5 in construction phase)

Figure D-1-a. Scenario 1: Day-time Noise Levels

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Figure D-1-b. Scenario 1: Night-time Noise Levels

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2. Scenario 2: Combined Cycle Gas Turbine units(9 units)

Figure D-2-a. Scenario 2: Day-time Noise Levels

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Figure D-2-b. Scenario 2: Night-time Noise Levels

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3. Scenario 3: Combined Cycle Gas Turbine units + Intermediate Mitigation Measures

Figure D-3-a. Scenario 3: Daytime Noise Levels

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Figure D-3-b. Scenario 3: Night-time Noise Levels

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4. Scenario 4: Combined Cycle Gas Turbine units + Substantial Mitigation Measures

Figure D-4-a. Scenario 4: Day-time Noise Levels

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Figure D-4-b. Scenario 4: Night-time Noise Levels

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5. Scenario 5: Open Cycle Gas Turbine units (9 units) + Acacia units

Figure D-5-a. Scenario 5: Day-time Noise Levels

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Figure D-5-b. Scenario 5: Night-time Noise Levels

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6. Scenario 6: Combined Cycle Gas Turbine units+ Acacia units+ Intermediate Mitigation Measures

Figure D-6-a. Scenario 6: Day-time Noise Levels

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Figure D-6-b. Scenario 6: Night-time Noise Levels

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7. Scenario 7: Combined Cycle Gas Turbine units + Acacia diesel units+ Substantial Mitigation Measures

Figure D-7-a. Scenario 7: Day-time Noise Levels

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Figure D-7-b. Scenario 7: Night-time Noise Levels

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8. Scenario 8: Acacia units only

Figure D-8-a. Scenario 8: Day-time Noise Levels

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Figure D-8-b. Scenario 8: Night-time Noise Levels

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APPENDIX E

Noise Emission Sources from Siemens and B&V

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APPENDIX F

BLACK & VEATCH MEMORANDUM ESKOMESKOM B&V Project 149106 Atlantis January 11, 2008 Preliminary Noise Evaluation

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